Cutters for strips and similar articles



March 16, 1965 P. L. F. GREHAL ETAL 3,173,205

cuIIERs FoR STRIPS AND SIMILAR ARTICLES Filed March 5, 1962 I man United States Patent O 3,173,205' CUTTERS FDR STRlPS AND SEMILAR ARTCLES Pierre Louis Franois Grehni, 2 Blvd. de la Gare, Saint- Brice, France; Robert Marcel Joseph Richornme, 56 Rue Waldeck-Rousseau, Saint-Nazaire, France; and Henri Edouard Zimmer-lin, 9 Rue des Petits-Hotels, Paris 10, France Filed Mm. 5, 1962, Ser. No. 177,463 Claims priority, application France, Apr. 4, 1961, 857,704 3 Claims. (Ci. Sil- 134) The present invention relates to cutters more especially for strips and wire used for packing or hooping cases and various packages, these cutters preventing numerous accidents due to the springing back of strips or hooping wire when they are cut for opening up packaging.

The cutters that are the object of the invention hold the two cut ends of the hooping, thus avoiding an unexpected springing back of these ends, which are progressively released after the cutting operation.

According to the invention, the cutters for strips and similar objects are characterised in that they are formed by two jaws articulated in relation to each other, the upper jaw comprising, at its front end, cams cooperating with a part articulated on the first jaw and carrying a knife and holding components, a hole being formed in the lower jaw just below the knife.

Various other characteristics of the invention will moreover be revealed in the detailed description which follows.

A form of embodiment of the purpose of the invention is shown by way of non-restrictive example in the attached drawing.

FIGURE l is a longitudinal section of the open cutter, substantially along the line I--I of FIGURE 3.

FIGURE 2 is a section along the line II-II of FIG- URE 1.

FIGURE 3 is a at View of the open cutter.

FIGURE 4 is a longitudinal elevation-section of the closed cutter.

The cutter is essentially formed by a handle or arm 1 comprising on its two sides, set-back parts 2 forming two cheeks 2a and 2b. The latter each comprise a cavity of appreciably triangular shape 3. Holes 4 are drilled in the upper part of the cheeks 2a, 2b so as to receive a spindle 5. A spindle 6, fixed to the rear part of the cheeks 2a, 2b carries a part 7 of appreciably rectangular shape, having, on its longitudinal sides, set-back parts 8, 9 drilled with holes 10, 11 through which passes the spindle 6. The plate 7 is formed, in its middle, with a slot 12 whose straightened part 13 carries by means or" screws 14, a blade 15. A spring 16, attached to one of its ends on a spindle 17 is wound around the spindle 6 and bears by its end 16a against the rear part of lthe holder plate 7. The central front part of the plate 2 which is provided with a hole 18, is reinforced at this spot by a cutting plate 19, also provided with a hole 20 concentric to the hole 18. Two buliers 21 and 22 are xed by any suitable means under the part 7. A channel shaped handle or arm 23 comprising diminished parts 24, 25 is cut out at its front part 23a to form two cams 26, 27 articulated on the spindles 5. The parts 1 and 23 form arms for operating the cutters so that when the channel shaped handle 23 is raised in the direction of the arrow F1 (FIGURE 4), the cams 26, 27 pressing on the front end of the part 7 drive the latter in the direction of the arrow F2 (FIG- URE l) and at the same time driving the blade which passes through the opening made by the superimposed holes 18, 20. Before this operation, the strip or wire to be cut has been introduced in the front part of the part 1 in the opening 3, and this strip or wire is cut by the blade 15. The ends of this strip or wire cut are held on the reinforced part 19 by flexible rubber buffers 21, 22 and thus cannot escape. However, if this strip or wire is ICC stretched very tightly before being cut, there is a slight slipping, which eliminates the tension of the strip or wire. When the operating arm 23 is returned from its first position opposite the direction of the arrow F1, the rotation of the cams 26, 27 releases the pressure exerted on the front part of the part7, the spring 16 returns this part to its first position by causing the buffers 21, 22 to lift, and, owing to this, the freeing of the ends of the cut strip or wire, but, these parts being no longer under tension, they have no tendency to escape abruptly as formerly happened, with the risk of injuring the person cutting the Vstrip or wire.

The external edges of the operating arms of the cutter are rounded so as not to injure the person using the cutter.

In the foregoing, it has'been stated that Ythe holding bulers for the ends of the object to be cut were of ilexible rubber, but they can be made of any other sutliciently elastic material.

The knife 15 being detachable, can be sharpened if so required, or changed if it breaks.

In the foregoing, it has been stated that the cutters were used for cutting hooping when opening up packaging, but they can also be used during packing operations for cutting strips or wires after setting.

Various modications can moreover be applied to the form of embodiment shown and described in detail, without going outside of the scope of the invention.

We claim:

l. A device for cutting strips and similar objects comprising a irst force applying arm; a second force applying arm hinged to said iirst arm; a holder plate hinged to said first arm, said plate comprising a slot and turned back portion; a cutting element supported on said turned back portion; cooperative cutting means carried on said first arm, said cooperative cutting means comprising a cutting plate defining a hole through which said cutting element can project; cam means on said second arm to force said cutting element into engagement with said cooperative cutting means as said second arm is rotated with respect to said first arm; and holding means on both sides of said cutting element to restrain the object being cut as said cutting element and cooperative cutting means engage.

2. A device for cutting strips and similar objects comprising a rst force applying arm; a second force applying arm hinged .to said first arm; a holder plate hinged to said iirst arm, said plate comprising a slot and turned back portion; a cutting element supported on said turned back portion; cooperative cutting means carried on said first arm; cam means on said second arm to force said cutting element into engagement with said cooperative cutting means as said second arm is rotated with respect to said iirst arm, wherein said rotation with said second arm causes force to be applied against said cutting means; and holding means on both sides of said cutting element to restrain the object being cut as said cutting element and cooperative cutting means engage.

3. A device for cutting strips and similar objects comprising a rst force applying arm; a second force applying arm hinged to said rst arm; a holder plate hinged to said tirst arm, said holder plate comprising a slot and turned back portion; a cutting element supported by said turned back portion; cooperative cutting means carried on said first arm; cam means on said second arm to force said cutting element into engagement with said cooperative cutting means as said second arm is rotated with respect to said rst arm; and holding means on both sides of said cutting element and mounted on said holder plate to restrain the object being cut as said cutting element and cooperative cutting means engage.

(References on following page) 4 3/54 Palmleaf 30-253 4/56 Ehinger 30-261 X 12/57 Matson 30-124 5/59 Bauer '3U-261K FOREIGN PATENTS 1879 Great Britain.

WILLIAM FELDMAN, Primary Examiner.

References Cited by theExaminer 2,673,394 UNrTED STATES PATENTS fglgg 6*/94 DaIZQUe '30-253 2,885,781 3,/97 frisjsot 30-189 X 5 11/11 Auimi 30-261 1.1/ 42 s tegmuller 30-124 979 5/45 Hod 30--258 X 1/46 Cacarillo 30-4-261 ,1/.49 Bi ett et a'l 30--134 4 8/51 Mcy 3O 250 10 EDWARD V. BENI-IAM, Examiner. 

1. A DEVICE FOR CUTTING STRIPS AND SIMILAR OBJECTTS COMPRISING A FIRST FORCE APPLYING ARM; A SECOND FORCE APPLYING ARM HINGED TO SAID FIRST ARM; A HOLDER PLATE HINGED TO SAID FIRST ARM, SAID PLATE COMPRISING A SLOT AND ''TURNED BACK PORTION; A CUTTING ELEMENT SUPPORTED ON SAID TURNED BACK PORTION; COOPERATIVE CUTTING MEANS CARRIED ON SAID FIRST ARM, SAID COOPERATIVE CUTTING MEANS COMPRISING A CUTTING PLATE DEFINING A HOLE THROUGH WHICH SAID CUTTING ELEMENT CAN PROJECT; CAM MEANS ON SAID SECOND ARM TO FORCE SAID CUTTING ELEMENT INTO ENGAGEMENT WITH SAID COOPERATIVE CUTTING MEANS AS SAID SECOND ARM IS ROTATED WITH RESPECT TO SAID FIRST ARM; AND HOLDING MEANS ON BOTH SIDES OF SAID CUTTING ELEMENT TO RESTRAIN THE OBJECT BEING CUT AS SAID CUTTING ELEMENT AND COOPERATIVE CUTTING MEANS ENGAGE. 